The fillet weld between backing

Ceramic Welding Backing | Ceramic Backing Welding| Ceramic Backing Taps

The fillet weld between backing plate A and rail 10 needs a blow through on every other longitudinal branch 314 and every other branch 316. If there has not been a blow through on the previous longitudinal branch 314 or branch 316, then when the decision point at the leading edge of the next longitudinal branch is reached two events occur. If blow through is present at the leading edge of the branch, the program continues as normal. If no blow through is detected, then the voltage of power supply 110 is reduced at lines 112, 114 to decrease the footprint of the arc causing a blow through as discussed in conjunction with FIGS. 10-13. If blow through was present at the previous branch 314 or branch 316 and blow through is again present at the next branch, then voltage of power supply 110 is raised at lines 112, 114 to increase to footprint of the arc to minimize the chance of another blow through. In summary, each rail has the correct ratio of blow throughs. In accordance with this aspect of the present invention, each of the longitudinal branches 314, 316 has the proper number of blow throughs needed to cause the molten metal to fill the fillet area as shown in FIG. 19. As shown in FIG. 20, if there is inadequate blow through in one of the short longitudinal branches 314, 316, the molten metal bead 330 a does not extend through backing plate A, leaving a notch 332 below rail 12. This notch is not desirable. By using the present invention, even if there is a substantial space between the edge of plate A and fillet edge 140 of rail 12, as shown in the top view of FIG. 22, there would not be excessive penetration as shown by the molten metal mass 330 b in FIG. 21.

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Date: 2023-04-10     hits: 364    Return